This is a really cool video that is playing on a really cool video service. This is the future of learning content. It is a mashup of a cover song with Flash technology presented in a social medium that allows you to participate. Create a tag or leave a comment and everyone who wants to will see it.
This fits David Wiley's future story of how everything will be anotated by the learners. It's here, we just have to use it. Every presentation intended to educate should be available in this format.